This project explains itself, but I'll explain anyway. It'll start out with a red background, and when it turns green, you need to click as fast as you can. When it asks you whether you want to save your score, type "y" to see everyone's time scores, then scroll to the bottom to see your score
Thanks to Dexter for some error correcting! Update three years later: Wow, who got 234ms? Update on 06/11/2018: Cheat detection Update on 26/5/2019: Hah, I got 231! Update same day: 84...?